A semiconductor device with a memory unit of which the variations in the operation timing are reduced is provided. The prism comprises a first prism element comprising a substantially crystalline crown material, and a second prism element contacting the first prism element, the second prism element comprising a substantially crystalline flint material. The method further includes transmitting the hidden audio signal, including the one or more of the identifier and the destination resource, in connection with an acoustic signal, and receiving the acoustic signal at a user device. The cut-out is covered by a first tongue piece that is attached to the first fitting portion, and a second tongue piece that is attached to a second outer cover. The amide compound has excellent plant disease controlling activity.